Camera.ScreenToWorldPoint 屏幕转世界位置

# [Camera](Camera.html).ScreenToWorldPoint 屏幕转世界位置

function *ScreenToWorldPoint* (*position* : [Vector3](../Vector3/Vector3.html)) : [Vector3](../Vector3/Vector3.html)

*Description* 描述

Transforms position from screen space into world space.

从屏幕空间到世界空间的变化位置。

Screenspace is defined in pixels. The bottom-left of the screen is (0,0); the
right-top is ([pixelWidth](Camera.pixelWidth.html),[pixelHeight](Camera.pixelHeight.html)). The z position is in world
units from the camera.

屏幕空间以像素定义。屏幕的左下为(0,0)；右上是([pixelWidth](Camera.pixelWidth.html),[pixelHeight](Camera.pixelHeight.html))，Z 的位置是以世界单位衡量的到相机的距离。

* [C#](#)
* [JavaScript](#)

```
using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	void OnDrawGizmosSelected() {
		Vector3 p = camera.ScreenToWorldPoint(new Vector3(100, 100, camera.nearClipPlane));
		Gizmos.color = Color.yellow;
		Gizmos.DrawSphere(p, 0.1F);
	}
}
```

```
// Draw a yellow sphere in the scene view at the position
// on the near plane of the selected camera that is
// 100 pixels from lower-left.
//在所选相机的近裁剪面上，绘制一个黄色的球，在左下100像素的位置
function OnDrawGizmosSelected () {
	var p : Vector3 = camera.ScreenToWorldPoint (Vector3 (100,100,camera.nearClipPlane));
	Gizmos.color = Color.yellow;
	Gizmos.DrawSphere (p, 0.1);
}
```